Cooker base



FIG. 1 is a front view of a cooker base, showing our new design;

FIG. 2 is rear view thereof;

FIG. 3 is first side view thereof;

FIG. 4 is second side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is bottom view thereof; and,

FIG. 7 is a perspective view thereof. 

CLAIM The ornamental design for a cooker base, as shown and described. 